Starts out as a real survey but then turns into a request for information that tries to sell the test taker into buying a full report. One could take the quiz and not reveal any personal information and not buy the report, but the value of the site may be then diminished as the results show up as a percentage on a grid.
For fun, I took the quiz three times and gave the same answers on the first (and main) 25 questions. But I answered the personal data in wildly different ways each time. Yet each time the percentage point of where I showed up on the grid was identical.